Improvement in hay-tedders



, 2 sheets-sheen 41.

R. BRYSON LHay Taddei.

No.' 99,833. l Patentedfeb. 15,187.0.l

Fignl.

N4 PETERS, PHDTO-LITHOGRQPHER, wASHxNGTON D C devices connected with and vof the tedder toothed on the diluted tatet garnant demic.

ROBERT BRYSON, OF SCHENEGTADY, NEW YORK.

Letters Patent No. 99,833, dated February 15, 1870.

To all whom it may concern:

Be -it knownthat I, ROBERT BRYsoN, of Schenectady, in the county of Schenectady, and State of New York, have invented a new and valuable Improvement in Hay-Tedders; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference be. ing had to the annexed drawings making a part of this specification, andto the letters and figures of reference marked thereon.

Figure 1 of the drawings is a topview of my invention.

.Figure 2 is an' end view of the revolving frafne which carries the forks.

Figure 3 is a view of the rack-bar and eccentric.

Figure 4 is a side view of the hay-tedder.

My invention relates to hay-tedders, and consists mainly in the construction and novel arrangement of operating the teeth or forks, whereby, after throwing the hay, they are automatically turned downward, in such a manner that the hay cannot remain thereon and clog them. A

The letter A ofthe drawings designates the wheels perimeter, andA formed wit-h an internal gear-wheel,'c, of smaller diameter, which is separated from the outer r'im by the short spokes b b.

B represents the wooden frame of the tedder, consisting of the two side beams c, which support therevolving frame C and the transverse beams c c: The wheels Aare attached to the beams c, each by a separate short axle.

To the after part of the side beams c c is attached the revolving frame C, vcarrying the forks or prongs d d This frame consists of two circular plates or disks D D, secured rigidly to the shaft c, which is attached at each end to the under side ofthe beams c c by the `journal plates and caps f f. To each end of the shaft e is secured a pinion, y, the teeth of which, engaging with those of the annular wheel of' thel same side, operate to produce a swift revolution of the frame C, in the same direction with that of the large wheel A.

Ihe forks or prongs are secured to the shafts E E, which have bearings near the rim of each disk D, which is perforated for this purpose. Four shafts E E are usually` employed, equidistant from the c entral shaft c, and 'so arranged that,`through the small spur-- wheels on their ends, twowill be operated by the rackbar K at one end of the frame C, while the other and alternating two fork-carrying shafts will be operated by a. similar rack-bar arranged at the other end -of the revolving frame.

To the inner side of each beam c is secured a circular casting, G, provided with a circular flanch, n, which forms a bearin g for the revolving ring z. As the shaft c of the frame C pierces the circular cast-ing G below .its center, and distant therefrom about half the lengthI of its radius, it is apparent that the ringzv revolves eccentrically with reference to thev shaft e, andkconsequeutl y, that theJ rack-bar K, which is pivoted to the revolving ring z, and slotted at o to slide on the shaft e, must have a reciprocal motion in the direction of its length, at the same time that it has arnotion of revolution about thc shaft e.

The rack-bar K- is toothed at cach end, but on opposite edges, and is arranged to engagewith the teeth of the partial spur-wheels s s at the same time that it slides on the shaft c, and is revolved by the ring z,- to which it is pivoted.

The guard-pins t t are fixed to the disks D D, and prevent the rack-bar from becoming disengaged from the partial spurwheels s s.

The reciprocating rack-bar operating on the J'spurwheel s of either shaft E, produces an independent rotary movement of tlreforks thereon; and while it enhances their effect in throwing the hay, by giving them a swifter motion rearward than they would have if fixed radially on the revolving frame c, yet, after this action, a greater practical advantage is obtained by the reverse movement ofthe rack-bar, now commenced, which causes the tines or forks to droop and shed the hay, thus effectually preventing the clogging thereof and consequent damage to the parts.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. The toothed and slotted rack-bar K, arranged to impart, through the spur-wheel s, reciprocating n10- tion to the times d d, as specified.

f?. In combination wit-h .the slotted rack-bar K', -the shaft e, eccentric z, and guard-pins tt, constructed and arranged to operate as specified. I

3. In combination with the internal wheel a', the revolving frame C provided with pinion, and the fork shafts E E provided with spnr-wheels s s, and operated automatically bythe slotted toothed rack K, eccentric z, and guard-pins t t, as specified.

In testimony that I claim the above, I have hereunto subscribed my name in the presence of two witnesses. u

ROBERT. BRYSON.

Witnesses D. C. MonTrMEn, GHAs. FULLER. 

